001    /*
002     * Copyright (C) 2012 eXo Platform SAS.
003     *
004     * This is free software; you can redistribute it and/or modify it
005     * under the terms of the GNU Lesser General Public License as
006     * published by the Free Software Foundation; either version 2.1 of
007     * the License, or (at your option) any later version.
008     *
009     * This software is distributed in the hope that it will be useful,
010     * but WITHOUT ANY WARRANTY; without even the implied warranty of
011     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
012     * Lesser General Public License for more details.
013     *
014     * You should have received a copy of the GNU Lesser General Public
015     * License along with this software; if not, write to the Free
016     * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
017     * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
018     */
019    
020    package org.crsh.text;
021    
022    /**
023     * A textual chunk.
024     */
025    public class Text implements Chunk {
026    
027      /**
028       * Create a new text chunk wrapping the provided sequence.
029       *
030       * @param s the sequence
031       * @return the created text
032       * @throws NullPointerException if the sequence is null
033       */
034      public static Text create(CharSequence s) throws NullPointerException {
035        if (s == null) {
036          throw new NullPointerException("No null sequence accepted");
037        }
038        return new Text(s);
039      }
040    
041      /** . */
042      final CharSequence value;
043    
044      private Text(CharSequence s) {
045        this.value = s;
046      }
047    
048      public CharSequence getText() {
049        return value;
050      }
051    
052      @Override
053      public boolean equals(Object obj) {
054        return obj == this || obj instanceof Text && value.toString().equals(((Text)obj).value.toString());
055      }
056    
057      @Override
058      public String toString() {
059        return "Text[" + value + "]";
060      }
061    }